BMRN Dark Pool Activity
ATS off-exchange volume intelligence · Week of 2026-07-20
BMRN dark pool volume for the week of 2026-07-20: 1.8M shares traded across 24 ATS venues with a total notional value of $104.3M. Volume is down 8.1% week-over-week. Primary routing venues include , MS TRAJECTORY CROSS (ATS-1), INTELLIGENT CROSS LLC.
Dark pool activity in BMRN reflects institutional order flow executing on Alternative Trading Systems (ATS) registered with the SEC — private venues where large-block trades are matched away from public exchanges to minimize price impact. StonkWhisper ingests FINRA-published ATS volume data to track these off-exchange flows. Sustained elevation in dark pool percentage — particularly when concentrated at specific venues — can indicate institutional accumulation or distribution ahead of significant price moves. The interactive charts below show 12-week historical volume and complete venue breakdown for BMRN.
Weekly History
| Week | Shares | DP % | WoW |
|---|---|---|---|
| 2026-07-20 | 1.8M | — | -8.1% |
| 2026-07-13 | 1.9M | — | -10.6% |
| 2026-07-06 | 2.1M | — | +16.5% |
| 2026-06-29 | 1.8M | — | -30.8% |
| 2026-06-22 | 2.7M | — | +61.5% |
| 2026-06-15 | 1.7M | — | -35.1% |
| 2026-06-08 | 2.5M | — | -35.1% |
| 2026-06-01 | 3.9M | — | +9.0% |
| 2026-05-25 | 3.6M | — | -25.6% |
| 2026-05-18 | 4.8M | — | +54.3% |
| 2026-05-11 | 3.1M | — | -24.0% |
| 2026-05-04 | 4.1M | — | +120.6% |